
from tkinter import *
root = Tk()
cv = Canvas(root, width=800, height=600)
cv.pack()
cv.create_oval(380, 280, 420, 320, outline="red", width=2)
cv.create_oval(350, 250, 450, 350, outline="green", width=2)
cv.create_oval(320, 220, 480, 380, outline="yellow", width=2)
cv.create_oval(290, 190, 510, 410, outline="blue", width=2)
root.mainloop()